Bass that fits in your trunk
Modern music really needs a good subwoofer to convey all of its power. But as cars become smaller, it becomes more difficult to find the space for the bass you need. JBL steps up with a clever solution in the Stadium Series BassHub, a compact passive subwoofer enclosure that mounts over the hub of your spare tire to give you maximum bass and maximum space savings.
Small size, big features
The BassHub features a 11" subwoofer with a tough fiberglass cone and rubber surround that'll hold up at high volumes, with power handling up to 600 watts RMS. The speaker's dual 4-ohm voice coils give you the flexibility of choosing 2- or 8-ohm total impedance. The rugged cast-aluminum enclosure protects the sub from your cargo while taking up very little space. A plug-in harness makes removing the sub to access the spare tire a simple task. 
Installation Note: The Stadium BassHub is designed to mount inside the spare tire rim. You'll need to turn your spare tire upside down to install this sub. It should only be used in vehicles that have the spare tire inside the vehicle and feature a removable spare tire post; not compatible with welded spare tire posts.